88 / 186
Universiti pertahanan nasional malaysia
4
laporan tahunan 2014
4
87
8
P e n y e l i d i k a n
d a n I n o v a s i
Bil
Penyelidik
Anugerah
Tajuk Penyelidikan/ Projek
Ringkasan Produk
16
17
NATURAL CONCRETE RETARDER
FROM SUGARCANE BAGASSE
SECURITY GLAZING FOR CRIME
PREVENTION
In construction activity, concrete need to be mixed
with chemical retarder to prolong the setting
time. According to Building Specification 2005
and literature, concrete can set or hardened in 2
hours. Therefore, for the usage of transportation
and limited pouring time especially in the area
that far from concrete plant, chemical retarder
has been put to retard the hardened process. In
this research, the retarder that being promoted
is sugarcane bagasse. The main composition of
sugarcane is the Sucrose (C12H22O11). This
content looks like similar in chemical content
for concrete retarder. Concrete retarder is an
admixture used to prolong concrete setting time
for the used of far concrete delivery and more
time needed in concreting work. This testing to
evaluate the effectiveness of sugarcane bagasse
as a concrete retarder. By using Vicat apparatus
for a penetration test, it can compare the time
taken between normal mortar and mortar with
sugarcane bagasse to set. A few samples were
prepared from the sugarcane bagasse in some
percentage by water/cement ratio of mortar. The
sucrose level will be measured by refractometer
in different mix design. This product will promote
the sustainable waste material as non chemical
adding material in concrete as a retarder. Several
tests have been made and the result show that
the concrete can be hardened between 4-5 hours
without decreasing the strength. The product
that will be promoted is sugarcane bagasse in
concrete with various sucrose content levels and
the testing procedure that is being done.
Glazing product is developed to provide credible
physical protection against lower security threat
levels that are commonly faced by the general
public nowadays, for both personnel and
properties. This product is able to withstand
heavy physical attacks, by criminal elements
using common handtools to defeat any forcible
entry attempts into houses, premises or display
showcases. This product is a laminated glass
make ups for application on windows, and doors,
that is strong enough to resist a considerable
number of heavy impacts from such tools that will
ever deter the efforts of a determined intruder.
This laminated glass is fabricated with two layers
of normal glass and is bonded with specially
formulated chemical resin that has high UV
absorption property in the middle of the laminated
glass. This security glazing can be as thin as 7.5
mm overall and incrementally increased to offer
higher impact resistance against more severe
threats. Various strength and impact tests to meet
the International Standards, for example a drop ball
test of 4.1 kg steel sphere with height of 3 metres
or higher (a German DIN Standard), has certified to
this product performance levels. Homes, premises
and other buildings which are installed with such
glazing system can now realistically enhance
overall security measures besides increasing the
aesthetical aspects. People who are using such
glazing system have essentially overcome everyday
criminal activities and provide higher qualtiy of life.
We can now live peacefully in our house without
being surrounded by iron grills.
En. Muhamad Azani
Bin Yahya
Kol Prof. Ir Dr.
Norazman bin
Mohamad Nor
BRONZE
BRONZE
(Sambungan) Jadual 40: Anugerah dan Pencapaian Penyelidik Pada MTE 2014